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Date of Publication:2012-01-01

Journal:大连理工大学学报

Volume:52

Issue:4

Page Number:553-558

ISSN No.:1000-8608

Abstract:When the suction bucket is subjected to vertical load,it is very easy to
   induce the integral shear failure of the foundation surrounding the
   bucket.However,it is not reasonable to ignore the non-coaxial
   phenomenon,which is caused by the principal stress rotation.Based on the
   UMAT of FEM software ABAQUS,the non-coaxial model is adopted into the
   numerical analysis of vertial suction bucket foundation′s bearing
   capacity problem.The results show that the non-coaxial model has little
   influence on the integral shear failure mechanism of the foundation,but
   it not only has a visible softening effect on the bearing
   capacity-settlement curve,but also decreases the vertical ultimate
   bearing capacity of the foundation.It′s safe to take the non-coaxial
   model into the assessment of the foundation′s bearing capacity,which is
   often determined by the vertical displacement.

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